Ok 2 points, well 2 ideas i have.
1 - There seems to be a surge of new sellers recently and a few are getting banned after 3 posts etc. Why cant there be a goal like 300 posts or 7 buyer feedback before someone may list for themselves? Jus a small thought.
2 - Often ive seen threads closed because they havent been expired which is fair play its the rules but sometimes people list after like 3 weeks of inactivity on another thread thats selling the same, couldnt we have a like cooling off period thing where if theres not a post in it for like 2 whole weeks they can relist and ask for the dead one to be locked/expired?